Comparative transmission characteristics of polyethylene insulated and paper insulated communication cables

COMMUNICATION cables of the multipair type (19-22-24-26-gage conductors) in which the individual wires are insulated with polyethylene were introduced into the Bell System plant a decade or more ago. Use of such cables increased gradually. In 1956 about 5 billion conductor feet (bcf) were installed. During 1960 over 50 bcf were installed.